Backed by over 140 years of plumbing know-how, the Mainstream Chair Height Toilet from American Standard delivers reliable, worry-free operation in the busiest bathroom. Equipped with FloWise® technology, this high-efficiency, water-conserving toilet uses just 1.28 gallons of water per flush, 20% less than the standard 1.6 gallons per flush. Powerful flushing action clears the bowl and EverClean® surface inhibits the growth of stains and odor-causing bacteria, mold and mildew.